From 1da0e8a095d82dd6b9ad0c0a45a7ee3b9d80ded7 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Tue, 13 Feb 2018 19:26:43 +0100
Subject: Never shrink line heights as a result of minimumFontSize.

See: MoonchildProductions/Pale-Moon#1614.
---
 layout/style/nsRuleNode.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'layout')

diff --git a/layout/style/nsRuleNode.cpp b/layout/style/nsRuleNode.cpp
index b22002d87..fa29fe0f1 100644
--- a/layout/style/nsRuleNode.cpp
+++ b/layout/style/nsRuleNode.cpp
@@ -4686,7 +4686,8 @@ nsRuleNode::ComputeTextData(void* aStartStruct,
         if (font->mSize != 0) {
           lh = nscoord(float(lh) * float(font->mFont.size) / float(font->mSize));
         } else {
-          lh = minimumFontSize;
+          // Never shrink line heights as a result of minFontSize
+          lh = std::max(lh, minimumFontSize);
         }
       }
       text->mLineHeight.SetCoordValue(lh);
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